There are farmers to inquire, the family has a water surface of about 2 acres of Qingshui Shantang, now want to breed yellow eel. Due to the fact that there have been no cercariae in the past, it is not known how difficult it is to bred, nor does it know what to do. And how much is its upfront cost investment? The risk is not big? Where are the good varieties available?
After consulting experts and finding technical information, Huanghua has strong environmental adaptability. Some abandoned water bodies that are not suitable for breeding other fish, and puddles and ponds that are not suitable for planting crops can be used as Huangchao Lake. Therefore, artificial breeding of jaundice is not difficult. Under the premise of doing a good job of disease prevention and anti-escape measures, the risk of breeding is not too great.
For the Shantang, we must first ensure that there is no water leakage and prevent jaundice from escaping. We must also repair the water inlet, drain outlet, and overflow outlet to change the water and drain water. Each water outlet must also be equipped with a barrage to prevent the carp from escaping when the water in the pool is rising. In order to facilitate the growth of Astragalus, it is also possible to artificially imitate the natural environment for the inhabitation of the yellow toad, such as putting stones, roots, etc., in the pond, and also to plant aquatic plants such as water lilies and arrowheads in the pond to improve water quality.
The seedlings selected for stocking must be free from injury, health, and smooth surface. The body color should be golden and pale yellow, and the color is too deep to grow quickly. Usually about 30 tails per kilogram of seedlings are selected. Stocking seedlings must be of the same size and size. Stocking density of 25 lbs. per square metre is recommended for raising about 100 tails (1 mus of water is about 66,700 tails). Before the seedlings enter the pond, they must be sterilized with 3% saline, which is a relatively simple method. In addition, the early spring stocking seedlings has a good effect, which is conducive to early start of food and extend the growth period.
Astragalus membranaceus is a omnivorous fish dominated by carnivorous foods, and has a wide range of sources of feed, such as small fish, prawns, quail, animal viscera and waste, alfalfa, silkworm cocoons, snail meat, rice, melon, vegetable crumbs, and so on. The amount of bait to be fed daily is about 6% of the weight of Astragalus, and it is advisable to have a little surplus after feeding, and to clean up the remaining food in time. Normally, it is fed twice a day. At 9 o'clock in the morning, one-third of the amount of eclipse is given, and at 6 o'clock in the evening, two-thirds of the amount of eclipse is added. When feeding is not possible, it will be stopped when it is time to invest, otherwise it will affect the growth of Astragalus.
It is necessary to adjust the water quality of the fish ponds and do the heat prevention and wintering work for the yellow peony. The water depth in the Huangshui Lake is suitable between 15-25 cm, and deeper water can be added in the hot season. When the weather suddenly changes (when it turns sunny or rain turns sunny) and the weather is hot, it is necessary to inject new water in time to prevent the yellow locust from losing oxygen. The suitable temperature for the growth of Astragalus is between 15°C and 28°C. In the summer, some shady crops can be planted around the Huangqian Lake, and the pool water can be changed frequently, and well water or spring water can be injected in time (water temperature cannot be too different). When water temperature is below 10°C, jaundice is dormant. Therefore, when the temperature drops to about 15°C, it should be fed with high-quality bait. When Huangpi is wintering, it is necessary to keep the pond mud moist and warm to prevent frostbite and freezing. In addition, we must pay attention to the prevention of rats and other hazards.
According to the actual situation, it is also possible to consider group breeding of cages. Putting 20 to 30 grams of tail weight is best for the seedlings that are to be placed, and put them at a time, putting 3-5 kilograms per square meter. The current price of seedlings on the market is about 24 yuan per kilogram, and it is also possible to purchase wild seedlings themselves.
In natural waters, jaundice usually does not occur.
Laser Distance Meter Accessories
China leading manufacturers and suppliers of Laser Distance Meter Accessories,Laser Distance Meter Lcd, and we are specialize in Lcd Display,Laser Distance Meter Reflector,Laser Case etc. Those accessories are being a part of Laser products,which play an important role in the whole production line.
About us
1. Quality. Thanks to our strong R&D team, JRT Laser distance meter and modules have been keeping the pace with the measuring technical evolving and pioneering the industry with the unique and patented laser phase measuring solution. From the view of Accuracy, Range, Resolution, Stability, Size and Power Consumption, JRT is undoubtedly one of the best in the line.
2. Schemes of single transmit and single receive. This is one of our patents. We are the only one in the market have this technology. It helps us to reduce our cost and power consumption a lot.
3. Accuracy and Range. Our typical accuracy is ±1.0mm, and range from 40m to 150m.
4. Our laser distance meter and distance module have a high stability, especially for industrial applications.
5. Materials. We use the high performance price ratio components to guarantee the high quality along with a low price.
6. Service. All goods will be inspected and tested before shipment and have one year guarantee and a life-time after sales service. Thirdly, customers` satisfaction is the most important thing to us. If you have any problems or questions, please contact us by Trademanager, email, WhatsApp, Skype, telephone. You will get your respond within 12 hours on working days, 24 hours on holidays.
7. Size. We are keeping research on size of our laser distance module, the smallest size is: 45*25*12mm, 25g for now. We are R&D a new module the size is as small as a pen.
Company Profile
Located in Chengdu, founded at 2004, Chengdu JRT Meter Technology Co., Ltd is a manufacturer and trading company,which is specialized in R&D, processing and selling laser distance meter and modules for 15 years. JRT is one of the leading companies focused on manufacturing laser distance modules in China. We can do OEM designs and make functions as customer required base on our excellent R&D team. JRT is the only factory can make laser distmeters and modules with schemes of single transmit and single receive in china, which greatly reduced our production cost. JRT always make efforts keeping manufacturing laser distance modules cheaper, smaller but with higher quality. Customers` needs are always being the most important things to our company. JRT do its best to make all customer satisfied. To do that, we are keeping improving our quality, service and technology. Making every measurement simple in life is our goal.
Why chose us
Chengdu JRT Meter is the factory of manufacturing laser measure modules sensors more than 14 years.
Supporting OEM your own laser measuring tools.
Welcome to tell us your applicaiton, we are glad to help.
Industial Applicaiton:
1. Distance optional: 40m, 60m, 100m, 120m, 150m
2. Interface optional: serial port, USB, RS232, RS485, Bluetooth etc
3. Operating temperature: -10 ºC~50 ºC can be customized.
FAQ
Q1: What`s the delivery time after an order placed for this Handheld Laser Distance Meter?
A1: Our standard delivery is 3 days if we have stock, otherwise we will let you know in time, usually we manufacture 2000pcs a day.
Q2: What`s the MOQ?
A2: Regular products only 1pcs, OEM/ODM products need 1000pcs at least
Q3: What`s the warranty of the meter?
A3: All our products have one year guarantee and a life-time after sales service.
Q4: Can I have a sample for testing?
A4: Yes. We do not offer free samples, but will reimburse the buyer once an order is confirmed.
After-sales Service
1. All goods will be inspected and tested before shipment.
2. Customers` satisfaction is the most important thing to us. If you have any problems or questions, please contact us by Trademanager, email, WhatsApp, Skype, telephone. You will get your respond within 12 hours on working days, 24 hours on holidays.
Laser Distance Meter Accessories,Laser Distance Meter Lcd,Lcd Display,Laser Distance Meter Reflector
Chengdu JRT Meter Technology Co., Ltd , https://www.cdlaserdistancesensor.com